Mystery Rocks

Rock Number	Properties	Prediction of Rock/Mineral	Why? (Rock or Mineral)
1	Dull luster, white, dense	Mineral	Because it looks like quartz.
2	Triangular with a hint of orange, shiny luster, little dense	Rock	You can see different colored minerals.
3	Very shiny luster, black with a shiny streak, dense, and has cleavage	Mineral	Weak, has only one color, and can break easily.
4	Dull luster, very hard, rough, grayish blue	Rock	Because it is very hard, and has different colored minerals.
5	Dull luster, rough, consists of different shades	Rock	It looks like it consists of more than one mineral
6	Black, shiny luster, smooth,	Mineral	Looks a lot like obsidian
7	powdery, white, dull luster, bumpy	Mineral	I think of it as a mineral because of its white streak
8	Rough texture, dense,	Rock	I think it's a rock because of its properties
9	white streak, rough, bumpy, little gold, flaky, dull luster	Mineral	I would think of it as a mineral because of its streak
10	white streak, smooth, gray, no luster	Rock	I would think of it as a mineral because of its streak
11	red, rough, red streak, no luster	Rock	I think it would be a rock because of how it looks/its physical appearance
12	Gray, looks like a regular rock, flat, less dense	Rock	It looks like a regular gray rock, nothing like a mineral
13	Crystallized, black and white, has different colors 'sandwiched' together	Mineral	You can see different minerals in between, and looks very similar to sandstone
14	Crystallized, white, dense, shiny luster	Mineral	Breaks easily, and has lots of cleavage.
15	Blue and gray mixed, less dense gray streak, normal luster	Rock	'Rock' hard, a little light, and looks like a normal rock you can identify any day.
16	Dark gray, less dense, blue streak, dull luster	Rock	No two minerals are mixed together, and and doesn't reflect very much light.